Please read my post below under Warranty recall-ECM. I experienced those same codes at 68,000 on my 02 Hlander. I had Autozone check them out and I kept resetting them. They would stay off for varying lengths of time and then come back on. I went in for the latest recall related to 0420 and 0430 and when the ECM reprogramming was done, these codes went off and I got two oxygen sensor codes 0161 and 0141. I have an appointment with the service dept. on Tuesday. They want me to pay for Oxygen sensor replacement but I believe all of this is related and I don't think I should have to pay. I hope this helps.